Files @ r9858:33377a23cc7d
Branch filter:

Location: cpp/openttd-patchpack/source/src/town_gui.cpp

belugas
(svn r14003) -Codechange: Replace numbers with Colours enum opn some DrawArrowButtons calls
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
/* $Id$ */

/** @file town_gui.cpp GUI for towns. */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "town.h"
#include "viewport_func.h"
#include "gfx_func.h"
#include "gui.h"
#include "window_gui.h"
#include "textbuf_gui.h"
#include "command_func.h"
#include "player_func.h"
#include "player_base.h"
#include "player_gui.h"
#include "network/network.h"
#include "variables.h"
#include "strings_func.h"
#include "sound_func.h"
#include "economy_func.h"
#include "core/alloc_func.hpp"
#include "settings_type.h"
#include "tilehighlight_func.h"
#include "string_func.h"
#include "sortlist_type.h"

#include "table/sprites.h"
#include "table/strings.h"

typedef GUIList<const Town*> GUITownList;

extern bool GenerateTowns();
static int _scengen_town_size = 1; // depress medium-sized towns per default

static const Widget _town_authority_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_BROWN,     0,    10,     0,    13, STR_00C5,                 STR_018B_CLOSE_WINDOW},              // TWA_CLOSEBOX
{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_BROWN,    11,   316,     0,    13, STR_2022_LOCAL_AUTHORITY, STR_018C_WINDOW_TITLE_DRAG_THIS},    // TWA_CAPTION
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_BROWN,     0,   316,    14,   105, 0x0,                      STR_NULL},                           // TWA_RATING_INFO
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_BROWN,     0,   304,   106,   157, 0x0,                      STR_2043_LIST_OF_THINGS_TO_DO_AT},   // TWA_COMMAND_LIST
{  WWT_SCROLLBAR,   RESIZE_NONE,  COLOUR_BROWN,   305,   316,   106,   157, 0x0,                      STR_0190_SCROLL_BAR_SCROLLS_LIST},   // TWA_SCROLLBAR
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_BROWN,     0,   316,   158,   209, 0x0,                      STR_NULL},                           // TWA_ACTION_INFO
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,     0,   316,   210,   221, STR_2042_DO_IT,           STR_2044_CARRY_OUT_THE_HIGHLIGHTED}, // TWA_EXECUTE
{   WIDGETS_END},
};

extern const byte _town_action_costs[8];

enum TownActions {
	TACT_NONE             = 0x00,

	TACT_ADVERTISE_SMALL  = 0x01,
	TACT_ADVERTISE_MEDIUM = 0x02,
	TACT_ADVERTISE_LARGE  = 0x04,
	TACT_ROAD_REBUILD     = 0x08,
	TACT_BUILD_STATUE     = 0x10,
	TACT_FOUND_BUILDINGS  = 0x20,
	TACT_BUY_RIGHTS       = 0x40,
	TACT_BRIBE            = 0x80,

	TACT_ADVERTISE        = TACT_ADVERTISE_SMALL | TACT_ADVERTISE_MEDIUM | TACT_ADVERTISE_LARGE,
	TACT_CONSTRUCTION     = TACT_ROAD_REBUILD | TACT_BUILD_STATUE | TACT_FOUND_BUILDINGS,
	TACT_FUNDS            = TACT_BUY_RIGHTS | TACT_BRIBE,
	TACT_ALL              = TACT_ADVERTISE | TACT_CONSTRUCTION | TACT_FUNDS,
};

DECLARE_ENUM_AS_BIT_SET(TownActions);

/** Get a list of available actions to do at a town.
 * @param nump if not NULL add put the number of available actions in it
 * @param pid the player that is querying the town
 * @param t the town that is queried
 * @return bitmasked value of enabled actions
 */
uint GetMaskOfTownActions(int *nump, PlayerID pid, const Town *t)
{
	int num = 0;
	TownActions buttons = TACT_NONE;

	/* Spectators and unwanted have no options */
	if (pid != PLAYER_SPECTATOR && !(_settings_game.economy.bribe && t->unwanted[pid])) {

		/* Things worth more than this are not shown */
		Money avail = GetPlayer(pid)->player_money + _price.station_value * 200;
		Money ref = _price.build_industry >> 8;

		/* Check the action bits for validity and
		 * if they are valid add them */
		for (uint i = 0; i != lengthof(_town_action_costs); i++) {
			const TownActions cur = (TownActions)(1 << i);

			/* Is the player not able to bribe ? */
			if (cur == TACT_BRIBE && (!_settings_game.economy.bribe || t->ratings[pid] >= RATING_BRIBE_MAXIMUM))
				continue;

			/* Is the player not able to buy exclusive rights ? */
			if (cur == TACT_BUY_RIGHTS && !_settings_game.economy.exclusive_rights)
				continue;

			/* Is the player not able to build a statue ? */
			if (cur == TACT_BUILD_STATUE && HasBit(t->statues, pid))
				continue;

			if (avail >= _town_action_costs[i] * ref) {
				buttons |= cur;
				num++;
			}
		}
	}

	if (nump != NULL) *nump = num;
	return buttons;
}

struct TownAuthorityWindow : Window {
private:
	Town *town;
	int sel_index;

	enum TownAuthorityWidget {
		TWA_CLOSEBOX = 0,
		TWA_CAPTION,
		TWA_RATING_INFO,
		TWA_COMMAND_LIST,
		TWA_SCROLLBAR,
		TWA_ACTION_INFO,
		TWA_EXECUTE,
	};

	/**
	 * Get the position of the Nth set bit.
	 *
	 * If there is no Nth bit set return -1
	 *
	 * @param bits The value to search in
	 * @param n The Nth set bit from which we want to know the position
	 * @return The position of the Nth set bit
	 */
	static int GetNthSetBit(uint32 bits, int n)
	{
		if (n >= 0) {
			uint i;
			FOR_EACH_SET_BIT(i, bits) {
				n--;
				if (n < 0) return i;
			}
		}
		return -1;
	}

public:
	TownAuthorityWindow(const WindowDesc *desc, WindowNumber window_number) :
			Window(desc, window_number), sel_index(-1)
	{
		this->town = GetTown(this->window_number);
		this->vscroll.cap = 5;

		this->FindWindowPlacementAndResize(desc);
	}

	virtual void OnPaint()
	{
		int numact;
		uint buttons = GetMaskOfTownActions(&numact, _local_player, this->town);

		SetVScrollCount(this, numact + 1);

		if (this->sel_index != -1 && !HasBit(buttons, this->sel_index)) {
			this->sel_index = -1;
		}

		this->SetWidgetDisabledState(6, this->sel_index == -1);

		SetDParam(0, this->window_number);
		this->DrawWidgets();

		DrawString(2, 15, STR_2023_TRANSPORT_COMPANY_RATINGS, TC_FROMSTRING);

		/* Draw list of players */
		int y = 25;

		const Player *p;
		FOR_ALL_PLAYERS(p) {
			if ((HasBit(this->town->have_ratings, p->index) || this->town->exclusivity == p->index)) {
				DrawPlayerIcon(p->index, 2, y);

				SetDParam(0, p->index);
				SetDParam(1, p->index);

				int r = this->town->ratings[p->index];
				StringID str;
				(str = STR_3035_APPALLING, r <= RATING_APPALLING) || // Apalling
				(str++,                    r <= RATING_VERYPOOR)  || // Very Poor
				(str++,                    r <= RATING_POOR)      || // Poor
				(str++,                    r <= RATING_MEDIOCRE)  || // Mediocore
				(str++,                    r <= RATING_GOOD)      || // Good
				(str++,                    r <= RATING_VERYGOOD)  || // Very Good
				(str++,                    r <= RATING_EXCELLENT) || // Excellent
				(str++,                    true);                    // Outstanding

				SetDParam(2, str);
				if (this->town->exclusivity == p->index) { // red icon for player with exclusive rights
					DrawSprite(SPR_BLOT, PALETTE_TO_RED, 18, y);
				}

				DrawString(28, y, STR_2024, TC_FROMSTRING);
				y += 10;
			}
		}
		y = 107;
		int pos = this->vscroll.pos;

		if (--pos < 0) {
			DrawString(2, y, STR_2045_ACTIONS_AVAILABLE, TC_FROMSTRING);
			y += 10;
		}

		for (int i = 0; buttons; i++, buttons >>= 1) {
			if (pos <= -5) break; ///< Draw only the 5 fitting lines

			if ((buttons & 1) && --pos < 0) {
				DrawString(3, y, STR_2046_SMALL_ADVERTISING_CAMPAIGN + i, TC_ORANGE);
				y += 10;
			}
		}

		if (this->sel_index != -1) {
			SetDParam(1, (_price.build_industry >> 8) * _town_action_costs[this->sel_index]);
			SetDParam(0, STR_2046_SMALL_ADVERTISING_CAMPAIGN + this->sel_index);
			DrawStringMultiLine(2, 159, STR_204D_INITIATE_A_SMALL_LOCAL + this->sel_index, 313);
		}
	}

	virtual void OnDoubleClick(Point pt, int widget) { HandleClick(pt, widget, true); }
	virtual void OnClick(Point pt, int widget) { HandleClick(pt, widget, false); }

	void HandleClick(Point pt, int widget, bool double_click)
	{
		switch (widget) {
			case TWA_COMMAND_LIST: {
				int y = (pt.y - 0x6B) / 10;

				if (!IsInsideMM(y, 0, 5)) return;

				y = GetNthSetBit(GetMaskOfTownActions(NULL, _local_player, this->town), y + this->vscroll.pos - 1);
				if (y >= 0) {
					this->sel_index = y;
					this->SetDirty();
				}
				/* Fall through to clicking in case we are double-clicked */
				if (!double_click || y < 0) break;
			}

			case TWA_EXECUTE:
				DoCommandP(this->town->xy, this->window_number, this->sel_index, NULL, CMD_DO_TOWN_ACTION | CMD_MSG(STR_00B4_CAN_T_DO_THIS));
				break;
		}
	}

	virtual void OnHundredthTick()
	{
		this->SetDirty();
	}
};

static const WindowDesc _town_authority_desc = {
	WDP_AUTO, WDP_AUTO, 317, 222, 317, 222,
	WC_TOWN_AUTHORITY, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS,
	_town_authority_widgets,
};

static void ShowTownAuthorityWindow(uint town)
{
	AllocateWindowDescFront<TownAuthorityWindow>(&_town_authority_desc, town);
}

struct TownViewWindow : Window {
private:
	Town *town;

	enum TownViewWidget {
		TVW_CAPTION = 1,
		TVW_STICKY,
		TVW_VIEWPORTPANEL,
		TVW_INFOPANEL = 5,
		TVW_CENTERVIEW,
		TVW_SHOWAUTORITY,
		TVW_CHANGENAME,
		TVW_EXPAND,
		TVW_DELETE,
	};

public:
	TownViewWindow(const WindowDesc *desc, WindowNumber window_number) : Window(desc, window_number)
	{
		this->town = GetTown(this->window_number);
		bool ingame = _game_mode != GM_EDITOR;

		this->flags4 |= WF_DISABLE_VP_SCROLL;
		InitializeWindowViewport(this, 3, 17, 254, 86, this->town->xy, ZOOM_LVL_TOWN);

		if (this->town->larger_town) this->widget[TVW_CAPTION].data = STR_CITY;
		this->SetWidgetHiddenState(TVW_DELETE, ingame);  // hide delete button on game mode
		this->SetWidgetHiddenState(TVW_EXPAND, ingame);  // hide expand button on game mode
		this->SetWidgetHiddenState(TVW_SHOWAUTORITY, !ingame); // hide autority button on editor mode

		if (ingame) {
			/* resize caption bar */
			this->widget[TVW_CAPTION].right = this->widget[TVW_STICKY].left -1;
			/* move the rename from top on scenario to bottom in game */
			this->widget[TVW_CHANGENAME].top = this->widget[TVW_EXPAND].top;
			this->widget[TVW_CHANGENAME].bottom = this->widget[TVW_EXPAND].bottom;
			this->widget[TVW_CHANGENAME].right = this->widget[TVW_STICKY].right;
		}

		/* Space required for showing noise level information */
		if (_settings_game.economy.station_noise_level) {
			ResizeWindowForWidget(this, TVW_INFOPANEL, 0, 10);
		}

		this->FindWindowPlacementAndResize(desc);
	}

	virtual void OnPaint()
	{
		/* disable renaming town in network games if you are not the server */
		this->SetWidgetDisabledState(TVW_CHANGENAME, _networking && !_network_server);

		SetDParam(0, this->town->index);
		this->DrawWidgets();

		SetDParam(0, this->town->population);
		SetDParam(1, this->town->num_houses);
		DrawString(2, 107, STR_2006_POPULATION, TC_FROMSTRING);

		SetDParam(0, this->town->act_pass);
		SetDParam(1, this->town->max_pass);
		DrawString(2, 117, STR_200D_PASSENGERS_LAST_MONTH_MAX, TC_FROMSTRING);

		SetDParam(0, this->town->act_mail);
		SetDParam(1, this->town->max_mail);
		DrawString(2, 127, STR_200E_MAIL_LAST_MONTH_MAX, TC_FROMSTRING);

		this->DrawViewport();

		/* only show the town noise, if the noise option is activated. */
		if (_settings_game.economy.station_noise_level) {
			SetDParam(0, this->town->noise_reached);
			SetDParam(1, this->town->MaxTownNoise());
			DrawString(2, 137, STR_NOISE_IN_TOWN, 0);
		}
	}

	virtual void OnClick(Point pt, int widget)
	{
		switch (widget) {
			case TVW_CENTERVIEW: /* scroll to location */
				if (_ctrl_pressed) {
					ShowExtraViewPortWindow(this->town->xy);
				} else {
					ScrollMainWindowToTile(this->town->xy);
				}
				break;

			case TVW_SHOWAUTORITY: /* town authority */
				ShowTownAuthorityWindow(this->window_number);
				break;

			case TVW_CHANGENAME: /* rename */
				SetDParam(0, this->window_number);
				ShowQueryString(STR_TOWN, STR_2007_RENAME_TOWN, 31, 130, this, CS_ALPHANUMERAL);
				break;

			case TVW_EXPAND: /* expand town - only available on Scenario editor */
				ExpandTown(this->town);
				break;

			case TVW_DELETE: /* delete town - only available on Scenario editor */
				delete this->town;
				break;
		}
	}

	virtual void OnInvalidateData(int data = 0)
	{
		/* Called when setting station noise have changed, in order to resize the window */
		this->SetDirty(); // refresh display for current size. This will allow to avoid glitches when downgrading

		if (_settings_game.economy.station_noise_level) { // adjust depending
			if (this->height == 150) { // window is smaller, needs to be bigger
				ResizeWindowForWidget(this, TVW_INFOPANEL, 0, 10);
			}
		} else {
			if (this->height != 150) { // window is bigger, needs to be smaller
				ResizeWindowForWidget(this, TVW_INFOPANEL, 0, -10);
			}
		}
	}

	virtual void OnQueryTextFinished(char *str)
	{
		if (!StrEmpty(str)) {
			_cmd_text = str;
			DoCommandP(0, this->window_number, 0, NULL,
				CMD_RENAME_TOWN | CMD_MSG(STR_2008_CAN_T_RENAME_TOWN));
		}
	}
};


static const Widget _town_view_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_BROWN,     0,    10,     0,    13, STR_00C5,                 STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_BROWN,    11,   172,     0,    13, STR_2005,                 STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,  COLOUR_BROWN,   248,   259,     0,    13, 0x0,                      STR_STICKY_BUTTON},
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_BROWN,     0,   259,    14,   105, 0x0,                      STR_NULL},
{      WWT_INSET,   RESIZE_NONE,  COLOUR_BROWN,     2,   257,    16,   103, 0x0,                      STR_NULL},
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_BROWN,     0,   259,   106,   137, 0x0,                      STR_NULL},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,     0,    85,   138,   149, STR_00E4_LOCATION,        STR_200B_CENTER_THE_MAIN_VIEW_ON},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,    86,   171,   138,   149, STR_2020_LOCAL_AUTHORITY, STR_2021_SHOW_INFORMATION_ON_LOCAL},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,   172,   247,     0,    13, STR_0130_RENAME,          STR_200C_CHANGE_TOWN_NAME},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,    86,   171,   138,   149, STR_023C_EXPAND,          STR_023B_INCREASE_SIZE_OF_TOWN},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,   172,   259,   138,   149, STR_0290_DELETE,          STR_0291_DELETE_THIS_TOWN_COMPLETELY},
{   WIDGETS_END},
};

static const WindowDesc _town_view_desc = {
	WDP_AUTO, WDP_AUTO, 260, 150, 260, 150,
	WC_TOWN_VIEW, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON,
	_town_view_widgets,
};

void ShowTownViewWindow(TownID town)
{
	AllocateWindowDescFront<TownViewWindow>(&_town_view_desc, town);
}

static const Widget _town_directory_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_BROWN,     0,    10,     0,    13, STR_00C5,               STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_BROWN,    11,   195,     0,    13, STR_2000_TOWNS,         STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,  COLOUR_BROWN,   196,   207,     0,    13, 0x0,                    STR_STICKY_BUTTON},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,     0,    98,    14,    25, STR_SORT_BY_NAME,       STR_SORT_ORDER_TIP},
{ WWT_PUSHTXTBTN,   RESIZE_NONE,  COLOUR_BROWN,    99,   195,    14,    25, STR_SORT_BY_POPULATION, STR_SORT_ORDER_TIP},
{      WWT_PANEL, RESIZE_BOTTOM,  COLOUR_BROWN,     0,   195,    26,   189, 0x0,                    STR_200A_TOWN_NAMES_CLICK_ON_NAME},
{  WWT_SCROLLBAR, RESIZE_BOTTOM,  COLOUR_BROWN,   196,   207,    14,   189, 0x0,                    STR_0190_SCROLL_BAR_SCROLLS_LIST},
{      WWT_PANEL,     RESIZE_TB,  COLOUR_BROWN,     0,   195,   190,   201, 0x0,                    STR_NULL},
{  WWT_RESIZEBOX,     RESIZE_TB,  COLOUR_BROWN,   196,   207,   190,   201, 0x0,                    STR_RESIZE_BUTTON},
{   WIDGETS_END},
};


struct TownDirectoryWindow : public Window {
private:
	enum TownDirectoryWidget {
		TDW_SORTNAME = 3,
		TDW_SORTPOPULATION,
		TDW_CENTERTOWN,
	};

	/* Runtime saved values */
	static Listing last_sorting;
	static const Town *last_town;

	/* Constants for sorting towns */
	static GUITownList::SortFunction * const sorter_funcs[];

	GUITownList towns;

	void BuildTownList()
	{
		if (!this->towns.NeedRebuild()) return;

		this->towns.Clear();

		const Town *t;
		FOR_ALL_TOWNS(t) {
			*this->towns.Append() = t;
		}

		this->towns.Compact();
		this->towns.RebuildDone();
	}

	void SortTownList()
	{
		last_town = NULL;
		this->towns.Sort();
	}

	/** Sort by town name */
	static int CDECL TownNameSorter(const Town * const *a, const Town * const *b)
	{
		static char buf_cache[64];
		const Town *ta = *a;
		const Town *tb = *b;
		char buf[64];

		SetDParam(0, ta->index);
		GetString(buf, STR_TOWN, lastof(buf));

		/* If 'b' is the same town as in the last round, use the cached value
		 * We do this to speed stuff up ('b' is called with the same value a lot of
		 * times after eachother) */
		if (tb != last_town) {
			last_town = tb;
			SetDParam(0, tb->index);
			GetString(buf_cache, STR_TOWN, lastof(buf_cache));
		}

		return strcmp(buf, buf_cache);
	}

	/** Sort by population */
	static int CDECL TownPopulationSorter(const Town * const *a, const Town * const *b)
	{
		return (*a)->population - (*b)->population;
	}

public:
	TownDirectoryWindow(const WindowDesc *desc) : Window(desc, 0)
	{
		this->vscroll.cap = 16;
		this->resize.step_height = 10;
		this->resize.height = this->height - 10 * 6; // minimum of 10 items in the list, each item 10 high

		this->towns.SetListing(this->last_sorting);
		this->towns.SetSortFuncs(this->sorter_funcs);
		this->towns.ForceRebuild();

		this->FindWindowPlacementAndResize(desc);
	}

	~TownDirectoryWindow()
	{
		this->last_sorting = this->towns.GetListing();
	}

	virtual void OnPaint()
	{
		this->BuildTownList();
		this->SortTownList();

		SetVScrollCount(this, this->towns.Length());

		this->DrawWidgets();
		this->DrawSortButtonState(this->towns.SortType() == 0 ? TDW_SORTNAME : TDW_SORTPOPULATION, this->towns.IsDescSortOrder() ? SBS_DOWN : SBS_UP);

		{
			int n = 0;
			uint16 i = this->vscroll.pos;
			int y = 28;

			while (i < this->towns.Length()) {
				const Town *t = this->towns[i];

				assert(t->xy);

				SetDParam(0, t->index);
				SetDParam(1, t->population);
				DrawString(2, y, STR_2057, TC_FROMSTRING);

				y += 10;
				i++;
				if (++n == this->vscroll.cap) break; // max number of towns in 1 window
			}

			SetDParam(0, GetWorldPopulation());
			DrawString(3, this->height - 12 + 2, STR_TOWN_POPULATION, TC_FROMSTRING);
		}
	}

	virtual void OnClick(Point pt, int widget)
	{
		switch (widget) {
			case TDW_SORTNAME: /* Sort by Name ascending/descending */
				if (this->towns.SortType() == 0) {
					this->towns.ToggleSortOrder();
				} else {
					this->towns.SetSortType(0);
				}
				this->SetDirty();
				break;

			case TDW_SORTPOPULATION: /* Sort by Population ascending/descending */
				if (this->towns.SortType() == 1) {
					this->towns.ToggleSortOrder();
				} else {
					this->towns.SetSortType(1);
				}
				this->SetDirty();
				break;

			case TDW_CENTERTOWN: { /* Click on Town Matrix */
				uint16 id_v = (pt.y - 28) / 10;

				if (id_v >= this->vscroll.cap) return; // click out of bounds

				id_v += this->vscroll.pos;

				if (id_v >= this->towns.Length()) return; // click out of town bounds

				const Town *t = this->towns[id_v];
				assert(t->xy);
				if (_ctrl_pressed) {
					ShowExtraViewPortWindow(t->xy);
				} else {
					ScrollMainWindowToTile(t->xy);
				}
				break;
			}
		}
	}

	virtual void OnHundredthTick()
	{
		this->SetDirty();
	}

	virtual void OnResize(Point new_size, Point delta)
	{
		this->vscroll.cap += delta.y / 10;
	}

	virtual void OnInvalidateData(int data)
	{
		if (data == 0) {
			this->towns.ForceRebuild();
		} else {
			this->towns.ForceResort();
		}
	}
};

Listing TownDirectoryWindow::last_sorting = {false, 0};
const Town *TownDirectoryWindow::last_town = NULL;

/* Available town directory sorting functions */
GUITownList::SortFunction * const TownDirectoryWindow::sorter_funcs[] = {
	&TownNameSorter,
	&TownPopulationSorter,
};

static const WindowDesc _town_directory_desc = {
	WDP_AUTO, WDP_AUTO, 208, 202, 208, 202,
	WC_TOWN_DIRECTORY, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
	_town_directory_widgets,
};

void ShowTownDirectory()
{
	if (BringWindowToFrontById(WC_TOWN_DIRECTORY, 0)) return;
	new TownDirectoryWindow(&_town_directory_desc);
}

void CcBuildTown(bool success, TileIndex tile, uint32 p1, uint32 p2)
{
	if (success) {
		SndPlayTileFx(SND_1F_SPLAT, tile);
		ResetObjectToPlace();
	}
}

static void PlaceProc_Town(TileIndex tile)
{
	uint32 size = min(_scengen_town_size, (int)TSM_CITY);
	uint32 mode = _scengen_town_size > TSM_CITY ? TSM_CITY : TSM_FIXED;
	DoCommandP(tile, size, mode, CcBuildTown, CMD_BUILD_TOWN | CMD_MSG(STR_0236_CAN_T_BUILD_TOWN_HERE));
}

static const Widget _scen_edit_town_gen_widgets[] = {
{   WWT_CLOSEBOX,   RESIZE_NONE,  COLOUR_DARK_GREEN,    0,    10,     0,    13, STR_00C5,                 STR_018B_CLOSE_WINDOW},
{    WWT_CAPTION,   RESIZE_NONE,  COLOUR_DARK_GREEN,   11,   147,     0,    13, STR_0233_TOWN_GENERATION, STR_018C_WINDOW_TITLE_DRAG_THIS},
{  WWT_STICKYBOX,   RESIZE_NONE,  COLOUR_DARK_GREEN,  148,   159,     0,    13, 0x0,                      STR_STICKY_BUTTON},
{      WWT_PANEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,    0,   159,    14,    94, 0x0,                      STR_NULL},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,          2,   157,    16,    27, STR_0234_NEW_TOWN,        STR_0235_CONSTRUCT_NEW_TOWN},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,          2,   157,    29,    40, STR_023D_RANDOM_TOWN,     STR_023E_BUILD_TOWN_IN_RANDOM_LOCATION},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,          2,   157,    42,    53, STR_MANY_RANDOM_TOWNS,    STR_RANDOM_TOWNS_TIP},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,          2,    53,    68,    79, STR_02A1_SMALL,           STR_02A4_SELECT_TOWN_SIZE},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,         54,   105,    68,    79, STR_02A2_MEDIUM,          STR_02A4_SELECT_TOWN_SIZE},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,        106,   157,    68,    79, STR_02A3_LARGE,           STR_02A4_SELECT_TOWN_SIZE},
{    WWT_TEXTBTN,   RESIZE_NONE,  COLOUR_GREY,          2,   157,    81,    92, STR_SCENARIO_EDITOR_CITY, STR_02A4_SELECT_TOWN_SIZE},
{      WWT_LABEL,   RESIZE_NONE,  COLOUR_DARK_GREEN,    0,   147,    54,    67, STR_02A5_TOWN_SIZE,       STR_NULL},
{   WIDGETS_END},
};

struct ScenarioEditorTownGenerationWindow : Window
{
private:
	enum TownScenarioEditorWidget {
		TSEW_NEWTOWN = 4,
		TSEW_RANDOMTOWN,
		TSEW_MANYRANDOMTOWNS,
		TSEW_SMALLTOWN,
		TSEW_MEDIUMTOWN,
		TSEW_LARGETOWN,
		TSEW_CITY,
	};

public:
	ScenarioEditorTownGenerationWindow(const WindowDesc *desc, WindowNumber window_number) : Window(desc, window_number)
	{
		this->LowerWidget(_scengen_town_size + TSEW_SMALLTOWN);
		this->FindWindowPlacementAndResize(desc);
	}

	virtual void OnPaint()
	{
		this->DrawWidgets();
	}

	virtual void OnClick(Point pt, int widget)
	{
		switch (widget) {
			case TSEW_NEWTOWN:
				HandlePlacePushButton(this, TSEW_NEWTOWN, SPR_CURSOR_TOWN, VHM_RECT, PlaceProc_Town);
				break;

			case TSEW_RANDOMTOWN: {
				Town *t;
				uint size = min(_scengen_town_size, (int)TSM_CITY);
				TownSizeMode mode = _scengen_town_size > TSM_CITY ? TSM_CITY : TSM_FIXED;

				this->HandleButtonClick(TSEW_RANDOMTOWN);
				_generating_world = true;
				t = CreateRandomTown(20, mode, size);
				_generating_world = false;

				if (t == NULL) {
					ShowErrorMessage(STR_NO_SPACE_FOR_TOWN, STR_CANNOT_GENERATE_TOWN, 0, 0);
				} else {
					ScrollMainWindowToTile(t->xy);
				}
			} break;

			case TSEW_MANYRANDOMTOWNS:
				this->HandleButtonClick(TSEW_MANYRANDOMTOWNS);

				_generating_world = true;
				if (!GenerateTowns()) ShowErrorMessage(STR_NO_SPACE_FOR_TOWN, STR_CANNOT_GENERATE_TOWN, 0, 0);
				_generating_world = false;
				break;

			case TSEW_SMALLTOWN: case TSEW_MEDIUMTOWN: case TSEW_LARGETOWN: case TSEW_CITY:
				this->RaiseWidget(_scengen_town_size + TSEW_SMALLTOWN);
				_scengen_town_size = widget - TSEW_SMALLTOWN;
				this->LowerWidget(_scengen_town_size + TSEW_SMALLTOWN);
				this->SetDirty();
				break;
		}
	}

	virtual void OnTimeout()
	{
		this->RaiseWidget(TSEW_RANDOMTOWN);
		this->RaiseWidget(TSEW_MANYRANDOMTOWNS);
		this->SetDirty();
	}

	virtual void OnPlaceObject(Point pt, TileIndex tile)
	{
		_place_proc(tile);
	}

	virtual void OnPlaceObjectAbort()
	{
		this->RaiseButtons();
		this->LowerWidget(_scengen_town_size + TSEW_SMALLTOWN);
		this->SetDirty();
	}
};

static const WindowDesc _scen_edit_town_gen_desc = {
	WDP_AUTO, WDP_AUTO, 160, 95, 160, 95,
	WC_SCEN_TOWN_GEN, WC_NONE,
	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_STICKY_BUTTON,
	_scen_edit_town_gen_widgets,
};

void ShowBuildTownWindow()
{
	if (_game_mode != GM_EDITOR && !IsValidPlayerID(_current_player)) return;
	AllocateWindowDescFront<ScenarioEditorTownGenerationWindow>(&_scen_edit_town_gen_desc, 0);
}